diff options
Diffstat (limited to 'src/3rdparty/v8/src/isolate.h')
| -rw-r--r-- | src/3rdparty/v8/src/isolate.h | 1494 |
1 files changed, 0 insertions, 1494 deletions
diff --git a/src/3rdparty/v8/src/isolate.h b/src/3rdparty/v8/src/isolate.h deleted file mode 100644 index 53fece7..0000000 --- a/src/3rdparty/v8/src/isolate.h +++ /dev/null @@ -1,1494 +0,0 @@ -// Copyright 2012 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following -// disclaimer in the documentation and/or other materials provided -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#ifndef V8_ISOLATE_H_ -#define V8_ISOLATE_H_ - -#include "../include/v8-debug.h" -#include "allocation.h" -#include "apiutils.h" -#include "atomicops.h" -#include "builtins.h" -#include "contexts.h" -#include "execution.h" -#include "frames.h" -#include "date.h" -#include "global-handles.h" -#include "handles.h" -#include "hashmap.h" -#include "heap.h" -#include "optimizing-compiler-thread.h" -#include "regexp-stack.h" -#include "runtime-profiler.h" -#include "runtime.h" -#include "zone.h" - -namespace v8 { -namespace internal { - -class Bootstrapper; -class CodeGenerator; -class CodeRange; -struct CodeStubInterfaceDescriptor; -class CompilationCache; -class ContextSlotCache; -class ContextSwitcher; -class Counters; -class CpuFeatures; -class CpuProfiler; -class DeoptimizerData; -class Deserializer; -class EmptyStatement; -class ExternalReferenceTable; -class Factory; -class FunctionInfoListener; -class HandleScopeImplementer; -class HeapProfiler; -class InlineRuntimeFunctionsTable; -class NoAllocationStringAllocator; -class InnerPointerToCodeCache; -class MarkingThread; -class PreallocatedMemoryThread; -class RegExpStack; -class SaveContext; -class UnicodeCache; -class ConsStringIteratorOp; -class StringTracker; -class StubCache; -class SweeperThread; -class ThreadManager; -class ThreadState; -class ThreadVisitor; // Defined in v8threads.h -class VMState; - -// 'void function pointer', used to roundtrip the -// ExternalReference::ExternalReferenceRedirector since we can not include -// assembler.h, where it is defined, here. -typedef void* ExternalReferenceRedirectorPointer(); - - -#ifdef ENABLE_DEBUGGER_SUPPORT -class Debug; -class Debugger; -class DebuggerAgent; -#endif - -#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \ - !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS) -class Redirection; -class Simulator; -#endif - - -// Static indirection table for handles to constants. If a frame -// element represents a constant, the data contains an index into -// this table of handles to the actual constants. -// Static indirection table for handles to constants. If a Result -// represents a constant, the data contains an index into this table -// of handles to the actual constants. -typedef ZoneList<Handle<Object> > ZoneObjectList; - -#define RETURN_IF_SCHEDULED_EXCEPTION(isolate) \ - do { \ - Isolate* __isolate__ = (isolate); \ - if (__isolate__->has_scheduled_exception()) { \ - return __isolate__->PromoteScheduledException(); \ - } \ - } while (false) - -#define RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, value) \ - do { \ - if ((call).is_null()) { \ - ASSERT((isolate)->has_pending_exception()); \ - return (value); \ - } \ - } while (false) - -#define CHECK_NOT_EMPTY_HANDLE(isolate, call) \ - do { \ - ASSERT(!(isolate)->has_pending_exception()); \ - CHECK(!(call).is_null()); \ - CHECK(!(isolate)->has_pending_exception()); \ - } while (false) - -#define RETURN_IF_EMPTY_HANDLE(isolate, call) \ - RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, Failure::Exception()) - -#define FOR_EACH_ISOLATE_ADDRESS_NAME(C) \ - C(Handler, handler) \ - C(CEntryFP, c_entry_fp) \ - C(Context, context) \ - C(PendingException, pending_exception) \ - C(ExternalCaughtException, external_caught_exception) \ - C(JSEntrySP, js_entry_sp) - - -// Platform-independent, reliable thread identifier. -class ThreadId { - public: - // Creates an invalid ThreadId. - ThreadId() : id_(kInvalidId) {} - - // Returns ThreadId for current thread. - static ThreadId Current() { return ThreadId(GetCurrentThreadId()); } - - // Returns invalid ThreadId (guaranteed not to be equal to any thread). - static ThreadId Invalid() { return ThreadId(kInvalidId); } - - // Compares ThreadIds for equality. - INLINE(bool Equals(const ThreadId& other) const) { - return id_ == other.id_; - } - - // Checks whether this ThreadId refers to any thread. - INLINE(bool IsValid() const) { - return id_ != kInvalidId; - } - - // Converts ThreadId to an integer representation - // (required for public API: V8::V8::GetCurrentThreadId). - int ToInteger() const { return id_; } - - // Converts ThreadId to an integer representation - // (required for public API: V8::V8::TerminateExecution). - static ThreadId FromInteger(int id) { return ThreadId(id); } - - private: - static const int kInvalidId = -1; - - explicit ThreadId(int id) : id_(id) {} - - static int AllocateThreadId(); - - static int GetCurrentThreadId(); - - int id_; - - static Atomic32 highest_thread_id_; - - friend class Isolate; -}; - - -class ThreadLocalTop BASE_EMBEDDED { - public: - // Does early low-level initialization that does not depend on the - // isolate being present. - ThreadLocalTop(); - - // Initialize the thread data. - void Initialize(); - - // Get the top C++ try catch handler or NULL if none are registered. - // - // This method is not guarenteed to return an address that can be - // used for comparison with addresses into the JS stack. If such an - // address is needed, use try_catch_handler_address. - v8::TryCatch* TryCatchHandler(); - - // Get the address of the top C++ try catch handler or NULL if - // none are registered. - // - // This method always returns an address that can be compared to - // pointers into the JavaScript stack. When running on actual - // hardware, try_catch_handler_address and TryCatchHandler return - // the same pointer. When running on a simulator with a separate JS - // stack, try_catch_handler_address returns a JS stack address that - // corresponds to the place on the JS stack where the C++ handler - // would have been if the stack were not separate. - inline Address try_catch_handler_address() { - return try_catch_handler_address_; - } - - // Set the address of the top C++ try catch handler. - inline void set_try_catch_handler_address(Address address) { - try_catch_handler_address_ = address; - } - - void Free() { - ASSERT(!has_pending_message_); - ASSERT(!external_caught_exception_); - ASSERT(try_catch_handler_address_ == NULL); - } - - Isolate* isolate_; - // The context where the current execution method is created and for variable - // lookups. - Context* context_; - ThreadId thread_id_; - MaybeObject* pending_exception_; - bool has_pending_message_; - Object* pending_message_obj_; - Script* pending_message_script_; - int pending_message_start_pos_; - int pending_message_end_pos_; - // Use a separate value for scheduled exceptions to preserve the - // invariants that hold about pending_exception. We may want to - // unify them later. - MaybeObject* scheduled_exception_; - bool external_caught_exception_; - SaveContext* save_context_; - v8::TryCatch* catcher_; - - // Stack. - Address c_entry_fp_; // the frame pointer of the top c entry frame - Address handler_; // try-blocks are chained through the stack - -#ifdef USE_SIMULATOR -#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS) - Simulator* simulator_; -#endif -#endif // USE_SIMULATOR - - Address js_entry_sp_; // the stack pointer of the bottom JS entry frame - Address external_callback_; // the external callback we're currently in - StateTag current_vm_state_; - - // Generated code scratch locations. - int32_t formal_count_; - - // Call back function to report unsafe JS accesses. - v8::FailedAccessCheckCallback failed_access_check_callback_; - - // Head of the list of live LookupResults. - LookupResult* top_lookup_result_; - - // Call back function for user object comparisons - v8::UserObjectComparisonCallback user_object_comparison_callback_; - - // Whether out of memory exceptions should be ignored. - bool ignore_out_of_memory_; - - private: - void InitializeInternal(); - - Address try_catch_handler_address_; -}; - - -class SystemThreadManager { - public: - enum ParallelSystemComponent { - PARALLEL_SWEEPING, - CONCURRENT_SWEEPING, - PARALLEL_MARKING - }; - - static int NumberOfParallelSystemThreads(ParallelSystemComponent type); - - static const int kMaxThreads = 4; -}; - - -#ifdef ENABLE_DEBUGGER_SUPPORT - -#define ISOLATE_DEBUGGER_INIT_LIST(V) \ - V(v8::Debug::EventCallback, debug_event_callback, NULL) \ - V(DebuggerAgent*, debugger_agent_instance, NULL) -#else - -#define ISOLATE_DEBUGGER_INIT_LIST(V) - -#endif - -#ifdef DEBUG - -#define ISOLATE_INIT_DEBUG_ARRAY_LIST(V) \ - V(CommentStatistic, paged_space_comments_statistics, \ - CommentStatistic::kMaxComments + 1) -#else - -#define ISOLATE_INIT_DEBUG_ARRAY_LIST(V) - -#endif - -#define ISOLATE_INIT_ARRAY_LIST(V) \ - /* SerializerDeserializer state. */ \ - V(int32_t, jsregexp_static_offsets_vector, kJSRegexpStaticOffsetsVectorSize) \ - V(int, bad_char_shift_table, kUC16AlphabetSize) \ - V(int, good_suffix_shift_table, (kBMMaxShift + 1)) \ - V(int, suffix_table, (kBMMaxShift + 1)) \ - V(uint32_t, private_random_seed, 2) \ - ISOLATE_INIT_DEBUG_ARRAY_LIST(V) - -typedef List<HeapObject*, PreallocatedStorageAllocationPolicy> DebugObjectCache; - -#define ISOLATE_INIT_LIST(V) \ - /* SerializerDeserializer state. */ \ - V(int, serialize_partial_snapshot_cache_length, 0) \ - V(int, serialize_partial_snapshot_cache_capacity, 0) \ - V(Object**, serialize_partial_snapshot_cache, NULL) \ - /* Assembler state. */ \ - /* A previously allocated buffer of kMinimalBufferSize bytes, or NULL. */ \ - V(byte*, assembler_spare_buffer, NULL) \ - V(FatalErrorCallback, exception_behavior, NULL) \ - V(AllowCodeGenerationFromStringsCallback, allow_code_gen_callback, NULL) \ - V(v8::Debug::MessageHandler, message_handler, NULL) \ - /* To distinguish the function templates, so that we can find them in the */ \ - /* function cache of the native context. */ \ - V(int, next_serial_number, 0) \ - V(ExternalReferenceRedirectorPointer*, external_reference_redirector, NULL) \ - V(bool, always_allow_natives_syntax, false) \ - /* Part of the state of liveedit. */ \ - V(FunctionInfoListener*, active_function_info_listener, NULL) \ - /* State for Relocatable. */ \ - V(Relocatable*, relocatable_top, NULL) \ - /* State for CodeEntry in profile-generator. */ \ - V(CodeGenerator*, current_code_generator, NULL) \ - V(bool, jump_target_compiling_deferred_code, false) \ - V(DebugObjectCache*, string_stream_debug_object_cache, NULL) \ - V(Object*, string_stream_current_security_token, NULL) \ - /* TODO(isolates): Release this on destruction? */ \ - V(int*, irregexp_interpreter_backtrack_stack_cache, NULL) \ - /* Serializer state. */ \ - V(ExternalReferenceTable*, external_reference_table, NULL) \ - /* AstNode state. */ \ - V(int, ast_node_id, 0) \ - V(unsigned, ast_node_count, 0) \ - /* SafeStackFrameIterator activations count. */ \ - V(int, safe_stack_iterator_counter, 0) \ - V(uint64_t, enabled_cpu_features, 0) \ - V(CpuProfiler*, cpu_profiler, NULL) \ - V(HeapProfiler*, heap_profiler, NULL) \ - V(bool, observer_delivery_pending, false) \ - ISOLATE_DEBUGGER_INIT_LIST(V) - -class Isolate { - // These forward declarations are required to make the friend declarations in - // PerIsolateThreadData work on some older versions of gcc. - class ThreadDataTable; - class EntryStackItem; - public: - ~Isolate(); - - // A thread has a PerIsolateThreadData instance for each isolate that it has - // entered. That instance is allocated when the isolate is initially entered - // and reused on subsequent entries. - class PerIsolateThreadData { - public: - PerIsolateThreadData(Isolate* isolate, ThreadId thread_id) - : isolate_(isolate), - thread_id_(thread_id), - stack_limit_(0), - thread_state_(NULL), -#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \ - !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS) - simulator_(NULL), -#endif - next_(NULL), - prev_(NULL) { } - Isolate* isolate() const { return isolate_; } - ThreadId thread_id() const { return thread_id_; } - void set_stack_limit(uintptr_t value) { stack_limit_ = value; } - uintptr_t stack_limit() const { return stack_limit_; } - ThreadState* thread_state() const { return thread_state_; } - void set_thread_state(ThreadState* value) { thread_state_ = value; } - -#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \ - !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS) - Simulator* simulator() const { return simulator_; } - void set_simulator(Simulator* simulator) { - simulator_ = simulator; - } -#endif - - bool Matches(Isolate* isolate, ThreadId thread_id) const { - return isolate_ == isolate && thread_id_.Equals(thread_id); - } - - private: - Isolate* isolate_; - ThreadId thread_id_; - uintptr_t stack_limit_; - ThreadState* thread_state_; - -#if !defined(__arm__) && defined(V8_TARGET_ARCH_ARM) || \ - !defined(__mips__) && defined(V8_TARGET_ARCH_MIPS) - Simulator* simulator_; -#endif - - PerIsolateThreadData* next_; - PerIsolateThreadData* prev_; - - friend class Isolate; - friend class ThreadDataTable; - friend class EntryStackItem; - - DISALLOW_COPY_AND_ASSIGN(PerIsolateThreadData); - }; - - - enum AddressId { -#define DECLARE_ENUM(CamelName, hacker_name) k##CamelName##Address, - FOR_EACH_ISOLATE_ADDRESS_NAME(DECLARE_ENUM) -#undef DECLARE_ENUM - kIsolateAddressCount - }; - - // Returns the PerIsolateThreadData for the current thread (or NULL if one is - // not currently set). - static PerIsolateThreadData* CurrentPerIsolateThreadData() { - return reinterpret_cast<PerIsolateThreadData*>( - Thread::GetThreadLocal(per_isolate_thread_data_key_)); - } - - // Returns the isolate inside which the current thread is running. - INLINE(static Isolate* Current()) { - Isolate* isolate = reinterpret_cast<Isolate*>( - Thread::GetExistingThreadLocal(isolate_key_)); - ASSERT(isolate != NULL); - return isolate; - } - - INLINE(static Isolate* UncheckedCurrent()) { - return reinterpret_cast<Isolate*>(Thread::GetThreadLocal(isolate_key_)); - } - - // Usually called by Init(), but can be called early e.g. to allow - // testing components that require logging but not the whole - // isolate. - // - // Safe to call more than once. - void InitializeLoggingAndCounters(); - - bool Init(Deserializer* des); - - bool IsInitialized() { return state_ == INITIALIZED; } - - // True if at least one thread Enter'ed this isolate. - bool IsInUse() { return entry_stack_ != NULL; } - - // Destroys the non-default isolates. - // Sets default isolate into "has_been_disposed" state rather then destroying, - // for legacy API reasons. - void TearDown(); - - static void GlobalTearDown(); - - bool IsDefaultIsolate() const { return this == default_isolate_; } - - // Ensures that process-wide resources and the default isolate have been - // allocated. It is only necessary to call this method in rare cases, for - // example if you are using V8 from within the body of a static initializer. - // Safe to call multiple times. - static void EnsureDefaultIsolate(); - - // Find the PerThread for this particular (isolate, thread) combination - // If one does not yet exist, return null. - PerIsolateThreadData* FindPerThreadDataForThisThread(); - -#ifdef ENABLE_DEBUGGER_SUPPORT - // Get the debugger from the default isolate. Preinitializes the - // default isolate if needed. - static Debugger* GetDefaultIsolateDebugger(); -#endif - - // Get the stack guard from the default isolate. Preinitializes the - // default isolate if needed. - static StackGuard* GetDefaultIsolateStackGuard(); - - // Returns the key used to store the pointer to the current isolate. - // Used internally for V8 threads that do not execute JavaScript but still - // are part of the domain of an isolate (like the context switcher). - static Thread::LocalStorageKey isolate_key() { - return isolate_key_; - } - - // Returns the key used to store process-wide thread IDs. - static Thread::LocalStorageKey thread_id_key() { - return thread_id_key_; - } - - static Thread::LocalStorageKey per_isolate_thread_data_key(); - - // If a client attempts to create a Locker without specifying an isolate, - // we assume that the client is using legacy behavior. Set up the current - // thread to be inside the implicit isolate (or fail a check if we have - // switched to non-legacy behavior). - static void EnterDefaultIsolate(); - - // Mutex for serializing access to break control structures. - Mutex* break_access() { return break_access_; } - - // Mutex for serializing access to debugger. - Mutex* debugger_access() { return debugger_access_; } - - Address get_address_from_id(AddressId id); - - // Access to top context (where the current function object was created). - Context* context() { return thread_local_top_.context_; } - void set_context(Context* context) { - ASSERT(context == NULL || context->IsContext()); - thread_local_top_.context_ = context; - } - Context** context_address() { return &thread_local_top_.context_; } - - SaveContext* save_context() {return thread_local_top_.save_context_; } - void set_save_context(SaveContext* save) { - thread_local_top_.save_context_ = save; - } - - // Access to current thread id. - ThreadId thread_id() { return thread_local_top_.thread_id_; } - void set_thread_id(ThreadId id) { thread_local_top_.thread_id_ = id; } - - // Interface to pending exception. - MaybeObject* pending_exception() { - ASSERT(has_pending_exception()); - return thread_local_top_.pending_exception_; - } - bool external_caught_exception() { - return thread_local_top_.external_caught_exception_; - } - void set_external_caught_exception(bool value) { - thread_local_top_.external_caught_exception_ = value; - } - void set_pending_exception(MaybeObject* exception) { - thread_local_top_.pending_exception_ = exception; - } - void clear_pending_exception() { - thread_local_top_.pending_exception_ = heap_.the_hole_value(); - } - MaybeObject** pending_exception_address() { - return &thread_local_top_.pending_exception_; - } - bool has_pending_exception() { - return !thread_local_top_.pending_exception_->IsTheHole(); - } - void clear_pending_message() { - thread_local_top_.has_pending_message_ = false; - thread_local_top_.pending_message_obj_ = heap_.the_hole_value(); - thread_local_top_.pending_message_script_ = NULL; - } - v8::TryCatch* try_catch_handler() { - return thread_local_top_.TryCatchHandler(); - } - Address try_catch_handler_address() { - return thread_local_top_.try_catch_handler_address(); - } - bool* external_caught_exception_address() { - return &thread_local_top_.external_caught_exception_; - } - v8::TryCatch* catcher() { - return thread_local_top_.catcher_; - } - void set_catcher(v8::TryCatch* catcher) { - thread_local_top_.catcher_ = catcher; - } - - MaybeObject** scheduled_exception_address() { - return &thread_local_top_.scheduled_exception_; - } - - Address pending_message_obj_address() { - return reinterpret_cast<Address>(&thread_local_top_.pending_message_obj_); - } - - Address has_pending_message_address() { - return reinterpret_cast<Address>(&thread_local_top_.has_pending_message_); - } - - Address pending_message_script_address() { - return reinterpret_cast<Address>( - &thread_local_top_.pending_message_script_); - } - - MaybeObject* scheduled_exception() { - ASSERT(has_scheduled_exception()); - return thread_local_top_.scheduled_exception_; - } - bool has_scheduled_exception() { - return thread_local_top_.scheduled_exception_ != heap_.the_hole_value(); - } - void clear_scheduled_exception() { - thread_local_top_.scheduled_exception_ = heap_.the_hole_value(); - } - - bool IsExternallyCaught(); - - bool is_catchable_by_javascript(MaybeObject* exception) { - return (!exception->IsOutOfMemory()) && - (exception != heap()->termination_exception()); - } - - // Serializer. - void PushToPartialSnapshotCache(Object* obj); - - // JS execution stack (see frames.h). - static Address c_entry_fp(ThreadLocalTop* thread) { - return thread->c_entry_fp_; - } - static Address handler(ThreadLocalTop* thread) { return thread->handler_; } - - inline Address* c_entry_fp_address() { - return &thread_local_top_.c_entry_fp_; - } - inline Address* handler_address() { return &thread_local_top_.handler_; } - - // Bottom JS entry (see StackTracer::Trace in log.cc). - static Address js_entry_sp(ThreadLocalTop* thread) { - return thread->js_entry_sp_; - } - inline Address* js_entry_sp_address() { - return &thread_local_top_.js_entry_sp_; - } - - // Generated code scratch locations. - void* formal_count_address() { return &thread_local_top_.formal_count_; } - - // Returns the global object of the current context. It could be - // a builtin object, or a JS global object. - Handle<GlobalObject> global_object() { - return Handle<GlobalObject>(context()->global_object()); - } - - // Returns the global proxy object of the current context. - Object* global_proxy() { - return context()->global_proxy(); - } - - Handle<JSBuiltinsObject> js_builtins_object() { - return Handle<JSBuiltinsObject>(thread_local_top_.context_->builtins()); - } - - static int ArchiveSpacePerThread() { return sizeof(ThreadLocalTop); } - void FreeThreadResources() { thread_local_top_.Free(); } - - // This method is called by the api after operations that may throw - // exceptions. If an exception was thrown and not handled by an external - // handler the exception is scheduled to be rethrown when we return to running - // JavaScript code. If an exception is scheduled true is returned. - bool OptionalRescheduleException(bool is_bottom_call); - - class ExceptionScope { - public: - explicit ExceptionScope(Isolate* isolate) : - // Scope currently can only be used for regular exceptions, not - // failures like OOM or termination exception. - isolate_(isolate), - pending_exception_(isolate_->pending_exception()->ToObjectUnchecked(), - isolate_), - catcher_(isolate_->catcher()) - { } - - ~ExceptionScope() { - isolate_->set_catcher(catcher_); - isolate_->set_pending_exception(*pending_exception_); - } - - private: - Isolate* isolate_; - Handle<Object> pending_exception_; - v8::TryCatch* catcher_; - }; - - void SetCaptureStackTraceForUncaughtExceptions( - bool capture, - int frame_limit, - StackTrace::StackTraceOptions options); - - // Tells whether the current context has experienced an out of memory - // exception. - bool is_out_of_memory(); - bool ignore_out_of_memory() { - return thread_local_top_.ignore_out_of_memory_; - } - void set_ignore_out_of_memory(bool value) { - thread_local_top_.ignore_out_of_memory_ = value; - } - - void PrintCurrentStackTrace(FILE* out); - void PrintStackTrace(FILE* out, char* thread_data); - void PrintStack(StringStream* accumulator); - void PrintStack(); - Handle<String> StackTraceString(); - NO_INLINE(void PushStackTraceAndDie(unsigned int magic, - Object* object, - Map* map, - unsigned int magic2)); - Handle<JSArray> CaptureCurrentStackTrace( - int frame_limit, - StackTrace::StackTraceOptions options); - - Handle<JSArray> CaptureSimpleStackTrace(Handle<JSObject> error_object, - Handle<Object> caller, - int limit); - void CaptureAndSetDetailedStackTrace(Handle<JSObject> error_object); - - // Returns if the top context may access the given global object. If - // the result is false, the pending exception is guaranteed to be - // set. - bool MayNamedAccess(JSObject* receiver, - Object* key, - v8::AccessType type); - bool MayIndexedAccess(JSObject* receiver, - uint32_t index, - v8::AccessType type); - - void SetFailedAccessCheckCallback(v8::FailedAccessCheckCallback callback); - void ReportFailedAccessCheck(JSObject* receiver, v8::AccessType type); - - void SetUserObjectComparisonCallback( - v8::UserObjectComparisonCallback callback); - inline v8::UserObjectComparisonCallback UserObjectComparisonCallback() { - return thread_local_top()->user_object_comparison_callback_; - } - - // Exception throwing support. The caller should use the result - // of Throw() as its return value. - Failure* Throw(Object* exception, MessageLocation* location = NULL); - // Re-throw an exception. This involves no error reporting since - // error reporting was handled when the exception was thrown - // originally. - Failure* ReThrow(MaybeObject* exception); - void ScheduleThrow(Object* exception); - void ReportPendingMessages(); - // Return pending location if any or unfilled structure. - MessageLocation GetMessageLocation(); - Failure* ThrowIllegalOperation(); - - // Promote a scheduled exception to pending. Asserts has_scheduled_exception. - Failure* PromoteScheduledException(); - void DoThrow(Object* exception, MessageLocation* location); - // Checks if exception should be reported and finds out if it's - // caught externally. - bool ShouldReportException(bool* can_be_caught_externally, - bool catchable_by_javascript); - - // Attempts to compute the current source location, storing the - // result in the target out parameter. - void ComputeLocation(MessageLocation* target); - - // Override command line flag. - void TraceException(bool flag); - - // Out of resource exception helpers. - Failure* StackOverflow(); - Failure* TerminateExecution(); - - // Administration - void Iterate(ObjectVisitor* v); - void Iterate(ObjectVisitor* v, ThreadLocalTop* t); - char* Iterate(ObjectVisitor* v, char* t); - void IterateThread(ThreadVisitor* v, char* t); - - - // Returns the current native and global context. - Handle<Context> native_context(); - Handle<Context> global_context(); - - // Returns the native context of the calling JavaScript code. That - // is, the native context of the top-most JavaScript frame. - Handle<Context> GetCallingNativeContext(); - - void RegisterTryCatchHandler(v8::TryCatch* that); - void UnregisterTryCatchHandler(v8::TryCatch* that); - - char* ArchiveThread(char* to); - char* RestoreThread(char* from); - - static const char* const kStackOverflowMessage; - - static const int kUC16AlphabetSize = 256; // See StringSearchBase. - static const int kBMMaxShift = 250; // See StringSearchBase. - - // Accessors. -#define GLOBAL_ACCESSOR(type, name, initialvalue) \ - inline type name() const { \ - ASSERT(OFFSET_OF(Isolate, name##_) == name##_debug_offset_); \ - return name##_; \ - } \ - inline void set_##name(type value) { \ - ASSERT(OFFSET_OF(Isolate, name##_) == name##_debug_offset_); \ - name##_ = value; \ - } - ISOLATE_INIT_LIST(GLOBAL_ACCESSOR) -#undef GLOBAL_ACCESSOR - -#define GLOBAL_ARRAY_ACCESSOR(type, name, length) \ - inline type* name() { \ - ASSERT(OFFSET_OF(Isolate, name##_) == name##_debug_offset_); \ - return &(name##_)[0]; \ - } - ISOLATE_INIT_ARRAY_LIST(GLOBAL_ARRAY_ACCESSOR) -#undef GLOBAL_ARRAY_ACCESSOR - -#define NATIVE_CONTEXT_FIELD_ACCESSOR(index, type, name) \ - Handle<type> name() { \ - return Handle<type>(context()->native_context()->name(), this); \ - } - NATIVE_CONTEXT_FIELDS(NATIVE_CONTEXT_FIELD_ACCESSOR) -#undef NATIVE_CONTEXT_FIELD_ACCESSOR - - Bootstrapper* bootstrapper() { return bootstrapper_; } - Counters* counters() { - // Call InitializeLoggingAndCounters() if logging is needed before - // the isolate is fully initialized. - ASSERT(counters_ != NULL); - return counters_; - } - CodeRange* code_range() { return code_range_; } - RuntimeProfiler* runtime_profiler() { return runtime_profiler_; } - CompilationCache* compilation_cache() { return compilation_cache_; } - Logger* logger() { - // Call InitializeLoggingAndCounters() if logging is needed before - // the isolate is fully initialized. - ASSERT(logger_ != NULL); - return logger_; - } - StackGuard* stack_guard() { return &stack_guard_; } - Heap* heap() { return &heap_; } - StatsTable* stats_table(); - StubCache* stub_cache() { return stub_cache_; } - DeoptimizerData* deoptimizer_data() { return deoptimizer_data_; } - ThreadLocalTop* thread_local_top() { return &thread_local_top_; } - - TranscendentalCache* transcendental_cache() const { - return transcendental_cache_; - } - - MemoryAllocator* memory_allocator() { - return memory_allocator_; - } - - KeyedLookupCache* keyed_lookup_cache() { - return keyed_lookup_cache_; - } - - ContextSlotCache* context_slot_cache() { - return context_slot_cache_; - } - - DescriptorLookupCache* descriptor_lookup_cache() { - return descriptor_lookup_cache_; - } - - v8::ImplementationUtilities::HandleScopeData* handle_scope_data() { - return &handle_scope_data_; - } - HandleScopeImplementer* handle_scope_implementer() { - ASSERT(handle_scope_implementer_); - return handle_scope_implementer_; - } - Zone* runtime_zone() { return &runtime_zone_; } - - UnicodeCache* unicode_cache() { - return unicode_cache_; - } - - InnerPointerToCodeCache* inner_pointer_to_code_cache() { - return inner_pointer_to_code_cache_; - } - - ConsStringIteratorOp* write_iterator() { return write_iterator_; } - - GlobalHandles* global_handles() { return global_handles_; } - - ThreadManager* thread_manager() { return thread_manager_; } - - ContextSwitcher* context_switcher() { return context_switcher_; } - - void set_context_switcher(ContextSwitcher* switcher) { - context_switcher_ = switcher; - } - - StringTracker* string_tracker() { return string_tracker_; } - - unibrow::Mapping<unibrow::Ecma262UnCanonicalize>* jsregexp_uncanonicalize() { - return &jsregexp_uncanonicalize_; - } - - unibrow::Mapping<unibrow::CanonicalizationRange>* jsregexp_canonrange() { - return &jsregexp_canonrange_; - } - - ConsStringIteratorOp* objects_string_compare_iterator_a() { - return &objects_string_compare_iterator_a_; - } - - ConsStringIteratorOp* objects_string_compare_iterator_b() { - return &objects_string_compare_iterator_b_; - } - - StaticResource<ConsStringIteratorOp>* objects_string_iterator() { - return &objects_string_iterator_; - } - - RuntimeState* runtime_state() { return &runtime_state_; } - - void set_fp_stubs_generated(bool value) { - fp_stubs_generated_ = value; - } - - bool fp_stubs_generated() { return fp_stubs_generated_; } - - Builtins* builtins() { return &builtins_; } - - void NotifyExtensionInstalled() { - has_installed_extensions_ = true; - } - - bool has_installed_extensions() { return has_installed_extensions_; } - - unibrow::Mapping<unibrow::Ecma262Canonicalize>* - regexp_macro_assembler_canonicalize() { - return ®exp_macro_assembler_canonicalize_; - } - - RegExpStack* regexp_stack() { return regexp_stack_; } - - unibrow::Mapping<unibrow::Ecma262Canonicalize>* - interp_canonicalize_mapping() { - return &interp_canonicalize_mapping_; - } - - void* PreallocatedStorageNew(size_t size); - void PreallocatedStorageDelete(void* p); - void PreallocatedStorageInit(size_t size); - -#ifdef ENABLE_DEBUGGER_SUPPORT - Debugger* debugger() { - if (!NoBarrier_Load(&debugger_initialized_)) InitializeDebugger(); - return debugger_; - } - Debug* debug() { - if (!NoBarrier_Load(&debugger_initialized_)) InitializeDebugger(); - return debug_; - } -#endif - - inline bool IsDebuggerActive(); - inline bool DebuggerHasBreakPoints(); - -#ifdef DEBUG - HistogramInfo* heap_histograms() { return heap_histograms_; } - - JSObject::SpillInformation* js_spill_information() { - return &js_spill_information_; - } - - int* code_kind_statistics() { return code_kind_statistics_; } - - bool allow_handle_deref() { return allow_handle_deref_; } - void set_allow_handle_deref(bool allow) { allow_handle_deref_ = allow; } -#endif - -#if defined(V8_TARGET_ARCH_ARM) && !defined(__arm__) || \ - defined(V8_TARGET_ARCH_MIPS) && !defined(__mips__) - bool simulator_initialized() { return simulator_initialized_; } - void set_simulator_initialized(bool initialized) { - simulator_initialized_ = initialized; - } - - HashMap* simulator_i_cache() { return simulator_i_cache_; } - void set_simulator_i_cache(HashMap* hash_map) { - simulator_i_cache_ = hash_map; - } - - Redirection* simulator_redirection() { - return simulator_redirection_; - } - void set_simulator_redirection(Redirection* redirection) { - simulator_redirection_ = redirection; - } -#endif - - Factory* factory() { return reinterpret_cast<Factory*>(this); } - - static const int kJSRegexpStaticOffsetsVectorSize = 128; - - Address external_callback() { - return thread_local_top_.external_callback_; - } - void set_external_callback(Address callback) { - thread_local_top_.external_callback_ = callback; - } - - StateTag current_vm_state() { - return thread_local_top_.current_vm_state_; - } - - void SetCurrentVMState(StateTag state) { - if (RuntimeProfiler::IsEnabled()) { - // Make sure thread local top is initialized. - ASSERT(thread_local_top_.isolate_ == this); - StateTag current_state = thread_local_top_.current_vm_state_; - if (current_state != JS && state == JS) { - // Non-JS -> JS transition. - RuntimeProfiler::IsolateEnteredJS(this); - } else if (current_state == JS && state != JS) { - // JS -> non-JS transition. - RuntimeProfiler::IsolateExitedJS(this); - } else { - // Other types of state transitions are not interesting to the - // runtime profiler, because they don't affect whether we're - // in JS or not. - ASSERT((current_state == JS) == (state == JS)); - } - } - thread_local_top_.current_vm_state_ = state; - } - - void SetData(void* data) { embedder_data_ = data; } - void* GetData() { return embedder_data_; } - - LookupResult* top_lookup_result() { - return thread_local_top_.top_lookup_result_; - } - void SetTopLookupResult(LookupResult* top) { - thread_local_top_.top_lookup_result_ = top; - } - - bool context_exit_happened() { - return context_exit_happened_; - } - void set_context_exit_happened(bool context_exit_happened) { - context_exit_happened_ = context_exit_happened; - } - - double time_millis_since_init() { - return OS::TimeCurrentMillis() - time_millis_at_init_; - } - - DateCache* date_cache() { - return date_cache_; - } - - void set_date_cache(DateCache* date_cache) { - if (date_cache != date_cache_) { - delete date_cache_; - } - date_cache_ = date_cache; - } - - CodeStubInterfaceDescriptor* - code_stub_interface_descriptor(int index); - - void IterateDeferredHandles(ObjectVisitor* visitor); - void LinkDeferredHandles(DeferredHandles* deferred_handles); - void UnlinkDeferredHandles(DeferredHandles* deferred_handles); - - OptimizingCompilerThread* optimizing_compiler_thread() { - return &optimizing_compiler_thread_; - } - - // PreInits and returns a default isolate. Needed when a new thread tries - // to create a Locker for the first time (the lock itself is in the isolate). - // TODO(svenpanne) This method is on death row... - static v8::Isolate* GetDefaultIsolateForLocking(); - - MarkingThread** marking_threads() { - return marking_thread_; - } - - SweeperThread** sweeper_threads() { - return sweeper_thread_; - } - - private: - Isolate(); - - friend struct GlobalState; - friend struct InitializeGlobalState; - - enum State { - UNINITIALIZED, // Some components may not have been allocated. - INITIALIZED // All components are fully initialized. - }; - - // These fields are accessed through the API, offsets must be kept in sync - // with v8::internal::Internals (in include/v8.h) constants. This is also - // verified in Isolate::Init() using runtime checks. - State state_; // Will be padded to kApiPointerSize. - void* embedder_data_; - Heap heap_; - - // The per-process lock should be acquired before the ThreadDataTable is - // modified. - class ThreadDataTable { - public: - ThreadDataTable(); - ~ThreadDataTable(); - - PerIsolateThreadData* Lookup(Isolate* isolate, ThreadId thread_id); - void Insert(PerIsolateThreadData* data); - void Remove(Isolate* isolate, ThreadId thread_id); - void Remove(PerIsolateThreadData* data); - void RemoveAllThreads(Isolate* isolate); - - private: - PerIsolateThreadData* list_; - }; - - // These items form a stack synchronously with threads Enter'ing and Exit'ing - // the Isolate. The top of the stack points to a thread which is currently - // running the Isolate. When the stack is empty, the Isolate is considered - // not entered by any thread and can be Disposed. - // If the same thread enters the Isolate more then once, the entry_count_ - // is incremented rather then a new item pushed to the stack. - class EntryStackItem { - public: - EntryStackItem(PerIsolateThreadData* previous_thread_data, - Isolate* previous_isolate, - EntryStackItem* previous_item) - : entry_count(1), - previous_thread_data(previous_thread_data), - previous_isolate(previous_isolate), - previous_item(previous_item) { } - - int entry_count; - PerIsolateThreadData* previous_thread_data; - Isolate* previous_isolate; - EntryStackItem* previous_item; - - private: - DISALLOW_COPY_AND_ASSIGN(EntryStackItem); - }; - - // This mutex protects highest_thread_id_, thread_data_table_ and - // default_isolate_. - static Mutex* process_wide_mutex_; - - static Thread::LocalStorageKey per_isolate_thread_data_key_; - static Thread::LocalStorageKey isolate_key_; - static Thread::LocalStorageKey thread_id_key_; - static Isolate* default_isolate_; - static ThreadDataTable* thread_data_table_; - - void Deinit(); - - static void SetIsolateThreadLocals(Isolate* isolate, - PerIsolateThreadData* data); - - // Allocate and insert PerIsolateThreadData into the ThreadDataTable - // (regardless of whether such data already exists). - PerIsolateThreadData* AllocatePerIsolateThreadData(ThreadId thread_id); - - // Find the PerThread for this particular (isolate, thread) combination. - // If one does not yet exist, allocate a new one. - PerIsolateThreadData* FindOrAllocatePerThreadDataForThisThread(); - - // Initializes the current thread to run this Isolate. - // Not thread-safe. Multiple threads should not Enter/Exit the same isolate - // at the same time, this should be prevented using external locking. - void Enter(); - - // Exits the current thread. The previosuly entered Isolate is restored - // for the thread. - // Not thread-safe. Multiple threads should not Enter/Exit the same isolate - // at the same time, this should be prevented using external locking. - void Exit(); - - void PreallocatedMemoryThreadStart(); - void PreallocatedMemoryThreadStop(); - void InitializeThreadLocal(); - - void PrintStackTrace(FILE* out, ThreadLocalTop* thread); - void MarkCompactPrologue(bool is_compacting, - ThreadLocalTop* archived_thread_data); - void MarkCompactEpilogue(bool is_compacting, - ThreadLocalTop* archived_thread_data); - - void FillCache(); - - void PropagatePendingExceptionToExternalTryCatch(); - - void InitializeDebugger(); - - // Traverse prototype chain to find out whether the object is derived from - // the Error object. - bool IsErrorObject(Handle<Object> obj); - - EntryStackItem* entry_stack_; - int stack_trace_nesting_level_; - StringStream* incomplete_message_; - // The preallocated memory thread singleton. - PreallocatedMemoryThread* preallocated_memory_thread_; - Address isolate_addresses_[kIsolateAddressCount + 1]; // NOLINT - NoAllocationStringAllocator* preallocated_message_space_; - Bootstrapper* bootstrapper_; - RuntimeProfiler* runtime_profiler_; - CompilationCache* compilation_cache_; - Counters* counters_; - CodeRange* code_range_; - Mutex* break_access_; - Atomic32 debugger_initialized_; - Mutex* debugger_access_; - Logger* logger_; - StackGuard stack_guard_; - StatsTable* stats_table_; - StubCache* stub_cache_; - DeoptimizerData* deoptimizer_data_; - ThreadLocalTop thread_local_top_; - bool capture_stack_trace_for_uncaught_exceptions_; - int stack_trace_for_uncaught_exceptions_frame_limit_; - StackTrace::StackTraceOptions stack_trace_for_uncaught_exceptions_options_; - TranscendentalCache* transcendental_cache_; - MemoryAllocator* memory_allocator_; - KeyedLookupCache* keyed_lookup_cache_; - ContextSlotCache* context_slot_cache_; - DescriptorLookupCache* descriptor_lookup_cache_; - v8::ImplementationUtilities::HandleScopeData handle_scope_data_; - HandleScopeImplementer* handle_scope_implementer_; - UnicodeCache* unicode_cache_; - Zone runtime_zone_; - PreallocatedStorage in_use_list_; - PreallocatedStorage free_list_; - bool preallocated_storage_preallocated_; - InnerPointerToCodeCache* inner_pointer_to_code_cache_; - ConsStringIteratorOp* write_iterator_; - GlobalHandles* global_handles_; - ContextSwitcher* context_switcher_; - ThreadManager* thread_manager_; - RuntimeState runtime_state_; - bool fp_stubs_generated_; - Builtins builtins_; - bool has_installed_extensions_; - StringTracker* string_tracker_; - unibrow::Mapping<unibrow::Ecma262UnCanonicalize> jsregexp_uncanonicalize_; - unibrow::Mapping<unibrow::CanonicalizationRange> jsregexp_canonrange_; - ConsStringIteratorOp objects_string_compare_iterator_a_; - ConsStringIteratorOp objects_string_compare_iterator_b_; - StaticResource<ConsStringIteratorOp> objects_string_iterator_; - unibrow::Mapping<unibrow::Ecma262Canonicalize> - regexp_macro_assembler_canonicalize_; - RegExpStack* regexp_stack_; - DateCache* date_cache_; - unibrow::Mapping<unibrow::Ecma262Canonicalize> interp_canonicalize_mapping_; - CodeStubInterfaceDescriptor* code_stub_interface_descriptors_; - - // The garbage collector should be a little more aggressive when it knows - // that a context was recently exited. - bool context_exit_happened_; - - // Time stamp at initialization. - double time_millis_at_init_; - -#if defined(V8_TARGET_ARCH_ARM) && !defined(__arm__) || \ - defined(V8_TARGET_ARCH_MIPS) && !defined(__mips__) - bool simulator_initialized_; - HashMap* simulator_i_cache_; - Redirection* simulator_redirection_; -#endif - -#ifdef DEBUG - // A static array of histogram info for each type. - HistogramInfo heap_histograms_[LAST_TYPE + 1]; - JSObject::SpillInformation js_spill_information_; - int code_kind_statistics_[Code::NUMBER_OF_KINDS]; - - bool allow_handle_deref_; -#endif - -#ifdef ENABLE_DEBUGGER_SUPPORT - Debugger* debugger_; - Debug* debug_; -#endif - -#define GLOBAL_BACKING_STORE(type, name, initialvalue) \ - type name##_; - ISOLATE_INIT_LIST(GLOBAL_BACKING_STORE) -#undef GLOBAL_BACKING_STORE - -#define GLOBAL_ARRAY_BACKING_STORE(type, name, length) \ - type name##_[length]; - ISOLATE_INIT_ARRAY_LIST(GLOBAL_ARRAY_BACKING_STORE) -#undef GLOBAL_ARRAY_BACKING_STORE - -#ifdef DEBUG - // This class is huge and has a number of fields controlled by - // preprocessor defines. Make sure the offsets of these fields agree - // between compilation units. -#define ISOLATE_FIELD_OFFSET(type, name, ignored) \ - static const intptr_t name##_debug_offset_; - ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET) - ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET) -#undef ISOLATE_FIELD_OFFSET -#endif - - DeferredHandles* deferred_handles_head_; - OptimizingCompilerThread optimizing_compiler_thread_; - MarkingThread** marking_thread_; - SweeperThread** sweeper_thread_; - - friend class ExecutionAccess; - friend class HandleScopeImplementer; - friend class IsolateInitializer; - friend class MarkingThread; - friend class OptimizingCompilerThread; - friend class SweeperThread; - friend class ThreadManager; - friend class Simulator; - friend class StackGuard; - friend class ThreadId; - friend class TestMemoryAllocatorScope; - friend class TestCodeRangeScope; - friend class v8::Isolate; - friend class v8::Locker; - friend class v8::Unlocker; - - DISALLOW_COPY_AND_ASSIGN(Isolate); -}; - - -// If the GCC version is 4.1.x or 4.2.x an additional field is added to the -// class as a work around for a bug in the generated code found with these -// versions of GCC. See V8 issue 122 for details. -class SaveContext BASE_EMBEDDED { - public: - inline explicit SaveContext(Isolate* isolate); - - ~SaveContext() { - if (context_.is_null()) { - Isolate* isolate = Isolate::Current(); - isolate->set_context(NULL); - isolate->set_save_context(prev_); - } else { - Isolate* isolate = context_->GetIsolate(); - isolate->set_context(*context_); - isolate->set_save_context(prev_); - } - } - - Handle<Context> context() { return context_; } - SaveContext* prev() { return prev_; } - - // Returns true if this save context is below a given JavaScript frame. - bool IsBelowFrame(JavaScriptFrame* frame) { - return (c_entry_fp_ == 0) || (c_entry_fp_ > frame->sp()); - } - - private: - Handle<Context> context_; -#if __GNUC_VERSION__ >= 40100 && __GNUC_VERSION__ < 40300 - Handle<Context> dummy_; -#endif - SaveContext* prev_; - Address c_entry_fp_; -}; - - -class AssertNoContextChange BASE_EMBEDDED { -#ifdef DEBUG - public: - AssertNoContextChange() : - scope_(Isolate::Current()), - context_(Isolate::Current()->context(), Isolate::Current()) { - } - - ~AssertNoContextChange() { - ASSERT(Isolate::Current()->context() == *context_); - } - - private: - HandleScope scope_; - Handle<Context> context_; -#else - public: - AssertNoContextChange() { } -#endif -}; - - -class ExecutionAccess BASE_EMBEDDED { - public: - explicit ExecutionAccess(Isolate* isolate) : isolate_(isolate) { - Lock(isolate); - } - ~ExecutionAccess() { Unlock(isolate_); } - - static void Lock(Isolate* isolate) { isolate->break_access_->Lock(); } - static void Unlock(Isolate* isolate) { isolate->break_access_->Unlock(); } - - static bool TryLock(Isolate* isolate) { - return isolate->break_access_->TryLock(); - } - - private: - Isolate* isolate_; -}; - - -// Support for checking for stack-overflows in C++ code. -class StackLimitCheck BASE_EMBEDDED { - public: - explicit StackLimitCheck(Isolate* isolate) : isolate_(isolate) { } - - bool HasOverflowed() const { - StackGuard* stack_guard = isolate_->stack_guard(); - return (reinterpret_cast<uintptr_t>(this) < stack_guard->real_climit()); - } - private: - Isolate* isolate_; -}; - - -// Support for temporarily postponing interrupts. When the outermost -// postpone scope is left the interrupts will be re-enabled and any -// interrupts that occurred while in the scope will be taken into -// account. -class PostponeInterruptsScope BASE_EMBEDDED { - public: - explicit PostponeInterruptsScope(Isolate* isolate) - : stack_guard_(isolate->stack_guard()) { - stack_guard_->thread_local_.postpone_interrupts_nesting_++; - stack_guard_->DisableInterrupts(); - } - - ~PostponeInterruptsScope() { - if (--stack_guard_->thread_local_.postpone_interrupts_nesting_ == 0) { - stack_guard_->EnableInterrupts(); - } - } - private: - StackGuard* stack_guard_; -}; - - -// Temporary macros for accessing current isolate and its subobjects. -// They provide better readability, especially when used a lot in the code. -#define HEAP (v8::internal::Isolate::Current()->heap()) -#define FACTORY (v8::internal::Isolate::Current()->factory()) -#define ISOLATE (v8::internal::Isolate::Current()) -#define LOGGER (v8::internal::Isolate::Current()->logger()) - - -// Tells whether the native context is marked with out of memory. -inline bool Context::has_out_of_memory() { - return native_context()->out_of_memory()->IsTrue(); -} - - -// Mark the native context with out of memory. -inline void Context::mark_out_of_memory() { - native_context()->set_out_of_memory(HEAP->true_value()); -} - - -} } // namespace v8::internal - -#endif // V8_ISOLATE_H_ |